<template>
  <div class="login-main">
    <img src="../assets/images/login-bg.png" class="login-wave" alt="" />
    <div class="login-container">
      <div class="img">
        <svg-icon icon-class="login-talk" />
      </div>
      <div class="login-box">
        <el-card class="login-form">
          <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title">多彩宝后台管理系统模板</h3>
            <el-form-item prop="username">
              <el-input
                  v-model="loginForm.username"
                  type="text"
                  size="large"
                  auto-complete="off"
                  placeholder="账号"
              >
                <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
              </el-input>
            </el-form-item>
            <el-form-item prop="password">
              <el-input
                  v-model="loginForm.password"
                  type="password"
                  size="large"
                  auto-complete="off"
                  placeholder="密码"
                  @keyup.enter="handleLogin"
              >
                <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
              </el-input>
            </el-form-item>
            <el-form-item prop="code" v-if="captchaEnabled">
              <el-input
                  v-model="loginForm.code"
                  size="large"
                  class="login-code-left"
                  auto-complete="off"
                  placeholder="验证码"
                  style="width: 63%"
                  @keyup.enter="handleLogin"
              >
                <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
              </el-input>
              <div class="login-code-right">
                <img :src="codeUrl" @click="getCode" class="login-code-right-img"/>
              </div>
            </el-form-item>
            <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
            <el-form-item style="width:100%;">
              <el-button
                  :loading="loading"
                  size="large"
                  type="primary"
                  style="width:100%;"
                  @click.prevent="handleLogin"
              >
                <span v-if="!loading">登 录</span>
                <span v-else>登 录 中...</span>
              </el-button>
              <div style="float: right;" v-if="register">
                <router-link class="link-type" :to="'/register'">立即注册</router-link>
              </div>
            </el-form-item>
          </el-form>
        </el-card>
      </div>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from "@/store/modules/user";

const userStore = useUserStore();
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "admin",
  password: "admin123",
  rememberMe: false,
  code: "",
  uuid: "",
});

const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  code: [{ required: true, trigger: "change", message: "请输入验证码" }],
};

const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

function handleLogin() {
  proxy.$refs.loginRef.validate((valid) => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), {
          expires: 30,
        });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore
        .login(loginForm.value)
        .then(() => {
          router.push({ path: redirect.value || "/" });
        })
        .catch(() => {
          loading.value = false;
          // 重新获取验证码
          if (captchaEnabled.value) {
            getCode();
          }
        });
    }
  });
}

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value =
      res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password:
      password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
  };
}

getCode();
getCookie();
</script>

<style lang="scss" scoped>
.login-main {
  width: 100%;
  height: 100%;
  user-select: none;
}
.login-wave {
  position: fixed;
  height: 100%;
  left: 0;
  bottom: 0;
  z-index: -1;
}
.login-container {
  width: 100vw;
  height: 100vh;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 18rem;
  padding: 0 2rem;
}
.login-avatar {
  display: flex;
  justify-content: center;
  align-items: center;
}
.login-avatar-img {
  width: 120px;
}
.login-box {
  display: flex;
  align-items: center;
  text-align: center;
}
.login-form {
  border-radius: 6px;
  background: #ffffff;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 38px;
    input {
      height: 38px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}
.login-title {
  text-transform: uppercase;
  margin: 15px 0;
  color: #999;
  font: bold 200% Consolas, Monaco, monospace;
}
.login-code-left {
  width: 66%;
}
.login-code-right {
  width: 34%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.login-code-right-img {
  height: 38px;
}
.login-remember-me {
  width: 100%;
  display: flex;
  justify-content: space-between;
}
.img{
  .svg-icon{
    width: 90% !important;
    height: 90% !important;
  }
}
@media screen and (max-width: 1180px) {
}
@media screen and (max-width: 968px) {
  .login-wave {
    display: none;
  }
  .img {
    display: none;
  }
  .login-container {
    grid-template-columns: 1fr;
  }
  .login-box {
    justify-content: center;
  }
}
</style>
